Liquid-fuel burner for furnaces of locomotive-boilers and for other furnaces



- G. ATOCK. LIQUID FUEL BURNER FUR FURNACES or LocoMoTIvE BOILERS ANU Fon OTHER FUHNACES.

APPLICATION FILED IULY 28,19I9. l

1,332,480. Patented Mar. 2, 1920.

I5 TG IG UNITED STATES PATENT OFFICE.

GEORGE ATOCK, 'OFCARACA VENEZUELA.

LIQUID-'FUEL BUnNEaron summons ors Loooiuorrvnsoinnns AND For. OTHER summons.

assenso.

Applicaton'led July 28, 1919.

ers for the Furnace-s of Locomotive-Boilers and for other Furnaces; and I do lherebykleclare the following' to be a full, clear,` and exact description of the invention, Vsuch as will I Aenable others skilled'in the' art towhic-h" it forced'forward in the burner body and out through suitable outlet orifices in the front end of the burner body into the furnace,'a separate steam passage leading into a chamber in the lower portion of the burner body so as to deliver separate small `jets of steam through small orifices situated below the aforesaid outlet oriices at the front lend of the burner.

T he vpresent invention `consists in an improved burner which while beinzfr simple in constructioninsures thorough mixing of the steam, oil and air within the burner body and effective delivery of the mixture into the `furnace chamber.

According to this invention the liquid fuel burner comprises an upper chamber in the burner body for the oil or liquid fuel and extending substantially throughout the length and breadth of said body, a mixing chamber in said burner body extending beneath the greater portion of the oil chamber and separated therefrom by a `partition or wall. a steam jet chamber in rear of and communicating with f the mixing1 chamber7 a steanrjet nozzlein said jet chamber, air passages leadingfrom the atmosphere into said jet chamber in rear of the forwardv end of the nozzle, a multiplicity of holes in the front wall of themixingfchamber, and a Specification of Letters Patent.

and

'end of the burner.

Patented `Mar. 2, 1920.

Serial No. 313,750.

multiplicity of holes in saidy partition and 'arranged so thaty the oil falls iin-drops, like rain,` into 'substantially all'parts of the mixing chamber wherein the falling drops are met by and mixed with the blast of steam and `air by which the oil is drivenforwardly throughy the holes in thefront wall of the mixing chamber,'into the'furnace. A steam inlet is'arranged in rear of the steam jet nozzle and there is provided a steaml passage extending longitudinallyof the burner body and below the mixing chamber from Vthe steam inlet to a transverse passage or channel adjacent the front end of the burner bot y, and a plurality of small passa-ges leading from said transverse passage `out of the burner body below theoutlets for the combustible mixture from vsaid mixing cham ber, the steam issuing from -said small passages tending to drive the combustible miX- ture, together with any oil that may run down the end 'face ofthe burner into the furnace.

Theinvention further consists in a liquid fuel burner constructedand adapted to 0peratesubstantially as yhereinafter described withre'ference to or as shown in the accompanving drawings. in which Figure l is a longitudinal sectional elevation of a burner according to this invention.

Fig.` 2 is a plan of the burner with the top plate or' cover removed.

Figj is a rear end view of the burner,

a a front end view of the burner. Like reference numbers indicate corresponding parts of the several yfigures of the drawings.

l is thebody of the burner, 'Q'and 3 arerespecti-vely the upper and lower chambers "in the burnerbody. these chambers beinrr separated from each other bv a partition or wall. 'which as shownfis an integral partV of the burner body, theV upper chamber@ is the chamber Vwhi cli receives the oil or liouid fuel from the 4source of supply and the lower chamber 3 is the mixinqchamber from which the combustible mixture is driven out through' the outlet apertures'G in the 'front 4l are the hereinbefore mentioned holes in the partition or vwall?) these holes 'forming communication between the chamber@ andthe chamberV 3, a suitable number ofthese holes 4 beingprovided, and

sunk. 7 is the steam jet nozzle or injector tted in the burner body in a chamber 8 therein, the rear end of this nozzle 7 in the example shown having a flange 7a which abuts against a suitable annular recess or shoulder in the burner body. 9 is a screwed aperture in the rear end of the burner body adapted to receive the outlet end of the usual pipe through which steam is supplied to the injector nozzle 7. 10 are passages through the sides of the burner body, the said passages being open at their outer ends to atmosphere and open at their inner ends at a suitable position in the chamber 8, preferably as shown well to the real of the forward or outlet end of the nozzle 7. 11 is a steam passage in the burner body below the mixing chamber 3, the rear or inlet end lof this passage communicating with the aperture 9 through which steam is admitted to the burner body, and 12 is the hereinbefore mentioned transverse channel in the burner body with which the forward or outlet end of the passage 11 communicates; 13 are three small passages leading from the channel 12 through the front end of the burner body below the outlet holes G. In the example shown the top of the burner body and of the chamber 2 therein consists of a separate plateor casting 111 provided with a screw socket 15 adapted to receive the usual pipe through which the oil or liquid fuel passes from thesupply into the oil chamber 2; 16 are screws fastening the cover 14 to the vburner bodv. 1f desired however the top of the burner body might consist of an integral part of the casting. 17 Fig. 2 are screwed holes in the partition or wall 5 into which the screws 16 are screwed for securing the cover 14 on the burner body. 18 Fig. 2, are holesv in lateral projections or lugs formed on the rear end of the burner body, these holes -beingprovided for the purpose of sek curing the burner in position for usefor instance by means of bolts passing through the holes 18. In working the oil admitted to the chamber 2. through the inlet 15, flows through they holes et in the wall 5 and falls into the chamber 3 in drops, and these drops are met by the combined jets of steam and air admitted to the chamber 3 through the vsteam nozzle or injector 7 and the air passages 10, the air being drawn in through the passages 10 by the action of the steam jet 7 by which the mixture of oil, air and liquid is forced forward and out through the outlet holes 6 as hereinbefore mentioned. At the same time that steam is admitted to the nozzle 7 steam is also admitted to the steam passage 11, channel 12 and passages 13, the steam issuing from the passages 18 at the front end of the burner. tending to drive the combustible' mixture, issuing from the outlets 6, in tothe furnace.

ber, said mixing chamber having a substan-r tially vertical wall at one end 'of the casing provided with a series of outlet holes, said casing having also at its other end a steam jet chamber and lateral passages for admit ting/air thereto, and a nozzle secured in the said steam jet chamber between the lateral air passagesv and operating to project a jet of steam and air against the drops of oil as they fall from the said perforated plate into` the mixing chamber.

2. A liquid fuel burner, for the furnaces of locomotive boilers and for other furnaces, comprising an upper chamber in the burner body for the oil or liquid fuel and extending substantially throughout the length and breadth of said body, a mixing chamber in said burner body extending beneath the greater portion of the oil chamber and separated therefrom by a partition or wall, a steam jet chamber in rear of and communieating with the mixing chamber, a steam jet nozzle in said jet chamber, a steam inlet in rear of the steam jet nozzle, air passages leading from the atmosphere into said jet chamber in rear of the forward end of the nozzle, a multiplicity of holes in the front wall of the mixing chamber, a multiplicity of holes in said partition and arranged so that the oil falls in drops, like rain, into sub stantially all parts of the mixing chamber wherein the falling drops are met by and mixed with the blast of steam and air by which it is driven forwardly, through the holes in the front wall of the mixing cham.- ber. into the furnace, a steam passage extending longitudinally of the burner body and below the mixing' chamber from the steam inlet to a transverse passage or channel adjacent the front `end of the burner 'bod/v, and a plurality of small passages leading from said transverse passage out of the burner body below the outlets for the combustible mixture from said mixing chamber.

In testimony whereof l affix my signature, in presence of two witnesses.

GEORGE ATOCK.

Witnesses EARL Peron, EMMANUEL JOHNSON. 

